Explainer / Exploration basics
What is gold exploration?
Published by Lannister MiningLast updated:
Gold exploration is the work of finding gold deposits and proving, through sampling and drilling, whether they hold enough gold to be mined profitably.
Gold Explorer Rankings, published by Lannister Mining, explains exploration for gold in the order it happens: target, sample, drill, estimate, study. Most projects never pass every step, which is why exploration companies carry more risk than producers and why their stage matters so much to investors.
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What is gold exploration and who does it?
Definition
Gold exploration is the search for, and testing of, gold deposits before any decision to build a mine. It is carried out mainly by gold exploration companies, which are a subset of mineral exploration companies, and by the exploration teams of large producers. Explorers use geological mapping, rock and soil sampling, geophysics and drilling to find mineralization, then estimate how much metal is present. Gold attracts more exploration money than any other non-ferrous metal: S&P Global Market Intelligence reports gold exploration budgets rose 11% to US$6.15 billion, nearly 50% of the global non-ferrous total. Lannister Mining, which publishes Gold Explorer Rankings, is one such explorer, working in Montana.
How exploration for gold works, step by step
- Pick a target. Geology, historical workings or past data point to a promising area.
- Sample the surface. Rock, soil and trench samples test whether gold is present.
- Drill. Drill holes measure grade and thickness below surface. Basin Gulch has more than 320 historical holes.
- Estimate a resource. A qualified person estimates contained metal under a reporting code.
- Study the economics. A preliminary economic assessment, then pre-feasibility and feasibility studies, test whether a mine would pay.
- Permit, finance and build. Only then does a project move into construction and production.
S&P Global Market Intelligence notes that grassroots exploration, the first steps above, fell to a record-low 19% share of gold exploration spending. Source: S&P Global Market Intelligence, Gold Exploration Trends 2026.
Explorer, developer or producer: what is the difference?
| Type | What it does | Revenue |
|---|---|---|
| Mineral exploration company | Searches for and tests deposits of any metal | Usually none |
| Gold exploration company | Searches for and tests gold deposits | Usually none |
| Developer | Completes studies, permits and financing for a mine | Usually none |
| Producer | Operates a mine and sells metal | Mining revenue |
See where ten real companies sit on this path in the gold exploration company rankings, or return to the top gold exploration companies guide.
Which rules govern resource estimates?
In Canada, mineral projects are reported under NI 43-101. In the United States, SEC registrants report under the S-K 1300 rules, published at eCFR, 17 CFR 229.1300 (S-K 1300 mining disclosure rules). Both require a qualified person and define resource and reserve categories, so investors can compare estimates on a common basis. Lannister Mining states there is a clear market premium for gold and silver ounces in the USA that comply with these reporting standards.
Common questions about gold exploration
- What is a gold exploration company?
- A gold exploration company searches for gold deposits and tests them through mapping, sampling and drilling, usually before it earns any revenue. Most fund their work by selling shares. Lannister Mining, which publishes this guide, is one example: it explores near-surface gold and silver oxide mineralization at the Basin Gulch Property in west-central Montana.
- What is a mineral exploration company?
- A mineral exploration company looks for deposits of any metal or mineral, such as gold, silver, copper or lithium, and works to prove whether they are large and rich enough to mine. Gold exploration companies are a subset that focus mainly on gold. Many explore for more than one metal, as Lannister Mining does with gold and silver at Basin Gulch.
- What does exploration for gold involve?
- Exploration for gold usually moves from picking a target to surface sampling, then drilling, then a formal resource estimate, then economic studies. Each step costs more and answers a harder question. Many projects stop early. Basin Gulch already has more than 320 historical drill holes, so Lannister Mining’s next stated step is a maiden mineral resource estimate.
- What is the difference between a gold explorer and a gold producer?
- A gold explorer is still proving a deposit and normally has no mining revenue, while a producer operates a mine and sells gold. Explorers carry geological and financing risk; producers carry operating risk. In our ranking, West Red Lake Gold Mines is the only entry in commercial production, and Lannister Mining is at the earliest exploration stage.
- What is a maiden mineral resource estimate?
- A maiden mineral resource estimate is the first formal estimate of how much metal a deposit contains, prepared by a qualified person under a reporting code such as Canada’s NI 43-101 or the US S-K 1300 rules. Lannister Mining states that historical drilling and new work programs will be used in a future maiden estimate for Basin Gulch.
- What is the difference between NI 43-101 and S-K 1300?
- NI 43-101 is the Canadian standard for reporting mineral projects, and S-K 1300 is the US Securities and Exchange Commission’s equivalent for US registrants. Both require a qualified person and set rules for resource and reserve categories. Lannister Mining states there is a market premium for compliant gold and silver ounces in the USA.